25081497 has 12 divisors (see below), whose sum is σ = 41404480. Its totient is φ = 14332248.

The previous prime is 25081493. The next prime is 25081499. The reversal of 25081497 is 79418052.

25081497 is a `hidden beast` number, since 2 + 508 + 149 + 7 = 666.

It is not a de Polignac number, because 25081497 - 2² = 25081493 is a prime.

It is a super-2 number, since 2×25081497² = 1258162983522018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25081493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198997 + ... + 199122.

Almost surely, 2^25081497 is an apocalyptic number.

It is an amenable number.

25081497 is a deficient number, since it is larger than the sum of its proper divisors (16322983).

25081497 is a wasteful number, since it uses less digits than its factorization.

25081497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398132 (or 398129 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 25081497 is about 5008.1430690427. The cubic root of 25081497 is about 292.7191607544.

It can be divided in two parts, 2508 and 1497, that added together give a triangular number (4005 = T₈₉).

The spelling of 25081497 in words is "twenty-five million, eighty-one thousand, four hundred ninety-seven".