25972039 has 16 divisors (see below), whose sum is σ = 28531008. Its totient is φ = 23542272.

The previous prime is 25972021. The next prime is 25972057. The reversal of 25972039 is 93027952.

It is an interprime number because it is at equal distance from previous prime (25972021) and next prime (25972057).

It is a cyclic number.

It is not a de Polignac number, because 25972039 - 2¹⁵ = 25939271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25971989 and 25972007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25972019) 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, 98622 + ... + 98884.

It is an arithmetic number, because the mean of its divisors is an integer number (1783188).

Almost surely, 2^25972039 is an apocalyptic number.

25972039 is a deficient number, since it is larger than the sum of its proper divisors (2558969).

25972039 is a wasteful number, since it uses less digits than its factorization.

25972039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 25972039 is about 5096.2769744197. The cubic root of 25972039 is about 296.1433708608.

The spelling of 25972039 in words is "twenty-five million, nine hundred seventy-two thousand, thirty-nine".