25652990 has 32 divisors (see below), whose sum is σ = 50893920. Its totient is φ = 9232000.

The previous prime is 25652987. The next prime is 25652993. The reversal of 25652990 is 9925652.

It is an interprime number because it is at equal distance from previous prime (25652987) and next prime (25652993).

It is a super-3 number, since 3×25652990³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25652993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9956 + ... + 12264.

It is an arithmetic number, because the mean of its divisors is an integer number (1590435).

Almost surely, 2^25652990 is an apocalyptic number.

25652990 is a deficient number, since it is larger than the sum of its proper divisors (25240930).

25652990 is a wasteful number, since it uses less digits than its factorization.

25652990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 25652990 is about 5064.8780834291. The cubic root of 25652990 is about 294.9257306092.

It can be divided in two parts, 2565 and 2990, that added together give a palindrome (5555).

The spelling of 25652990 in words is "twenty-five million, six hundred fifty-two thousand, nine hundred ninety".