25494129 has 16 divisors (see below), whose sum is σ = 38046400. Its totient is φ = 16871328.

The previous prime is 25494127. The next prime is 25494179. The reversal of 25494129 is 92149452.

It is not a de Polignac number, because 25494129 - 2¹ = 25494127 is a prime.

It is a super-2 number, since 2×25494129² = 1299901226937282, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25494093 and 25494102.

It is not an unprimeable number, because it can be changed into a prime (25494127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357 + ... + 7149.

It is an arithmetic number, because the mean of its divisors is an integer number (2377900).

Almost surely, 2^25494129 is an apocalyptic number.

It is an amenable number.

25494129 is a deficient number, since it is larger than the sum of its proper divisors (12552271).

25494129 is a wasteful number, since it uses less digits than its factorization.

25494129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6941 (or 6935 counting only the distinct ones).

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

The square root of 25494129 is about 5049.1711200949. The cubic root of 25494129 is about 294.3156750913.

The spelling of 25494129 in words is "twenty-five million, four hundred ninety-four thousand, one hundred twenty-nine".