25397541 has 36 divisors (see below), whose sum is σ = 42204708. Its totient is φ = 14579712.

The previous prime is 25397521. The next prime is 25397549. The reversal of 25397541 is 14579352.

25397541 is a `hidden beast` number, since 25 + 3 + 97 + 541 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 10536516 + 14861025 = 3246^2 + 3855^2 .

It is not a de Polignac number, because 25397541 - 2¹⁰ = 25396517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25397496 and 25397505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25397549) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 224701 + ... + 224813.

It is an arithmetic number, because the mean of its divisors is an integer number (1172353).

Almost surely, 2^25397541 is an apocalyptic number.

It is an amenable number.

25397541 is a deficient number, since it is larger than the sum of its proper divisors (16807167).

25397541 is a wasteful number, since it uses less digits than its factorization.

25397541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 146 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 25397541 is about 5039.5973053410. The cubic root of 25397541 is about 293.9435196237.

It can be divided in two parts, 253975 and 41, that added together give a square (254016 = 504²).

The spelling of 25397541 in words is "twenty-five million, three hundred ninety-seven thousand, five hundred forty-one".