1491477025 has 12 divisors (see below), whose sum is σ = 1852699500. Its totient is φ = 1191073280.

The previous prime is 1491477019. The next prime is 1491477073. The reversal of 1491477025 is 5207741941.

It can be written as a sum of positive squares in 6 ways, for example, as 436266769 + 1055210256 = 20887^2 + 32484^2 .

It is not a de Polignac number, because 1491477025 - 2¹⁹ = 1490952737 is a prime.

It is a super-2 number, since 2×1491477025² = 4449007432205701250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38200 + ... + 66649.

It is an arithmetic number, because the mean of its divisors is an integer number (154391625).

Almost surely, 2^1491477025 is an apocalyptic number.

It is an amenable number.

1491477025 is a deficient number, since it is larger than the sum of its proper divisors (361222475).

1491477025 is a wasteful number, since it uses less digits than its factorization.

1491477025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105428 (or 105423 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 1491477025 is about 38619.6455835628. The cubic root of 1491477025 is about 1142.5420407898.

The spelling of 1491477025 in words is "one billion, four hundred ninety-one million, four hundred seventy-seven thousand, twenty-five".