25829397 has 24 divisors (see below), whose sum is σ = 41015520. Its totient is φ = 15533280.

The previous prime is 25829393. The next prime is 25829407. The reversal of 25829397 is 79392852.

25829397 is a `hidden beast` number, since 258 + 2 + 9 + 397 = 666.

It is not a de Polignac number, because 25829397 - 2² = 25829393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25829393) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12823 + ... + 14699.

It is an arithmetic number, because the mean of its divisors is an integer number (1708980).

Almost surely, 2^25829397 is an apocalyptic number.

It is an amenable number.

25829397 is a deficient number, since it is larger than the sum of its proper divisors (15186123).

25829397 is a wasteful number, since it uses less digits than its factorization.

25829397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033 (or 2030 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 25829397 is about 5082.2629802087. The cubic root of 25829397 is about 295.6002219592.

The spelling of 25829397 in words is "twenty-five million, eight hundred twenty-nine thousand, three hundred ninety-seven".