25272990 has 24 divisors (see below), whose sum is σ = 65710008. Its totient is φ = 6739440.

The previous prime is 25272979. The next prime is 25272991. The reversal of 25272990 is 9927252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25272991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140316 + ... + 140495.

It is an arithmetic number, because the mean of its divisors is an integer number (2737917).

Almost surely, 2^25272990 is an apocalyptic number.

25272990 is an abundant number, since it is smaller than the sum of its proper divisors (40437018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25272990 is a wasteful number, since it uses less digits than its factorization.

25272990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280824 (or 280821 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 25272990 is about 5027.2248805877. The cubic root of 25272990 is about 293.4622266996.

It can be divided in two parts, 25272 and 990, that added together give a palindrome (26262).

The spelling of 25272990 in words is "twenty-five million, two hundred seventy-two thousand, nine hundred ninety".