25972597 has 24 divisors (see below), whose sum is σ = 31432536. Its totient is φ = 21385728.

The previous prime is 25972571. The next prime is 25972607. The reversal of 25972597 is 79527952.

It can be written as a sum of positive squares in 4 ways, for example, as 7918596 + 18054001 = 2814^2 + 4249^2 .

It is not a de Polignac number, because 25972597 - 2⁷ = 25972469 is a prime.

It is a Duffinian number.

Its product of digits (396900) is a multiple of the sum of its prime divisors (270).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25972517) 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, 189513 + ... + 189649.

It is an arithmetic number, because the mean of its divisors is an integer number (1309689).

Almost surely, 2^25972597 is an apocalyptic number.

It is an amenable number.

25972597 is a deficient number, since it is larger than the sum of its proper divisors (5459939).

25972597 is a wasteful number, since it uses less digits than its factorization.

25972597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 270 counting only the distinct ones).

The product of its digits is 396900, while the sum is 46.

The square root of 25972597 is about 5096.3317199727. The cubic root of 25972597 is about 296.1454916906.

It can be divided in two parts, 25972 and 597, that added together give a square (26569 = 163²).

The spelling of 25972597 in words is "twenty-five million, nine hundred seventy-two thousand, five hundred ninety-seven".