25072491 has 8 divisors (see below), whose sum is σ = 33465744. Its totient is φ = 16697120.

The previous prime is 25072469. The next prime is 25072513. The reversal of 25072491 is 19427052.

It is an interprime number because it is at equal distance from previous prime (25072469) and next prime (25072513).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25072491 - 2⁶ = 25072427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25072451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 756 + ... + 7121.

It is an arithmetic number, because the mean of its divisors is an integer number (4183218).

Almost surely, 2^25072491 is an apocalyptic number.

25072491 is a deficient number, since it is larger than the sum of its proper divisors (8393253).

25072491 is a wasteful number, since it uses less digits than its factorization.

25072491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8941.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 25072491 is about 5007.2438526599. The cubic root of 25072491 is about 292.6841210549.

The spelling of 25072491 in words is "twenty-five million, seventy-two thousand, four hundred ninety-one".