25400535 has 16 divisors (see below), whose sum is σ = 40707456. Its totient is φ = 13524768.

The previous prime is 25400527. The next prime is 25400561. The reversal of 25400535 is 53500452.

It is not a de Polignac number, because 25400535 - 2³ = 25400527 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12672 + ... + 14538.

It is an arithmetic number, because the mean of its divisors is an integer number (2544216).

Almost surely, 2^25400535 is an apocalyptic number.

25400535 is a deficient number, since it is larger than the sum of its proper divisors (15306921).

25400535 is a wasteful number, since it uses less digits than its factorization.

25400535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782.

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 25400535 is about 5039.8943441306. The cubic root of 25400535 is about 293.9550697224.

Adding to 25400535 its reverse (53500452), we get a palindrome (78900987).

The spelling of 25400535 in words is "twenty-five million, four hundred thousand, five hundred thirty-five".