25153957 has 2 divisors, whose sum is σ = 25153958. Its totient is φ = 25153956.

The previous prime is 25153903. The next prime is 25153979. The reversal of 25153957 is 75935152.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19766916 + 5387041 = 4446^2 + 2321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25153957 is a prime.

It is equal to p_1574956 and since 25153957 and 1574956 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25153357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12576978 + 12576979.

It is an arithmetic number, because the mean of its divisors is an integer number (12576979).

Almost surely, 2^25153957 is an apocalyptic number.

It is an amenable number.

25153957 is a deficient number, since it is larger than the sum of its proper divisors (1).

25153957 is an equidigital number, since it uses as much as digits as its factorization.

25153957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47250, while the sum is 37.

The square root of 25153957 is about 5015.3720699466. The cubic root of 25153957 is about 293.0007765552. Note that the first 3 decimals are identical.

It can be divided in two parts, 25 and 153957, that multiplied together give a triangular number (3848925 = T₂₇₇₄).

The spelling of 25153957 in words is "twenty-five million, one hundred fifty-three thousand, nine hundred fifty-seven".