1494209025 has 45 divisors (see below), whose sum is σ = 2771017491. Its totient is φ = 795983760.

The previous prime is 1494209023. The next prime is 1494209027. The reversal of 1494209025 is 5209024941.

The square root of 1494209025 is 38655.

It is a perfect power (a square), and thus also a powerful number.

1494209025 is a `hidden beast` number, since 149 + 420 + 90 + 2 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1494209023) and next prime (1494209027).

It can be written as a sum of positive squares in only one way, i.e., 537915249 + 956293776 = 23193^2 + 30924^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 1494209025 - 2¹ = 1494209023 is a prime.

It is a super-2 number, since 2×1494209025² = 4465321220782901250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1494209023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1739046 + ... + 1739904.

Almost surely, 2^1494209025 is an apocalyptic number.

1494209025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1494209025 is the 38655-th square number.

1494209025 is the 19328-th centered octagonal number.

It is an amenable number.

1494209025 is a deficient number, since it is larger than the sum of its proper divisors (1276808466).

1494209025 is an frugal number, since it uses more digits than its factorization.

1494209025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The cubic root of 1494209025 is about 1143.2392290713.

Multiplying 1494209025 by its sum of digits (36), we get a square (53791524900 = 231930²).

The spelling of 1494209025 in words is "one billion, four hundred ninety-four million, two hundred nine thousand, twenty-five".