25345262190 has 32 divisors (see below), whose sum is σ = 61430900256. Its totient is φ = 6691817600.

The previous prime is 25345262177. The next prime is 25345262191. The reversal of 25345262190 is 9126254352.

It is a super-2 number, since 2×25345262190² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25345262191) 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, 4179357 + ... + 4185416.

It is an arithmetic number, because the mean of its divisors is an integer number (1919715633).

Almost surely, 2^25345262190 is an apocalyptic number.

25345262190 is an abundant number, since it is smaller than the sum of its proper divisors (36085638066).

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

25345262190 is a wasteful number, since it uses less digits than its factorization.

25345262190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8364884.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 25345262190 in words is "twenty-five billion, three hundred forty-five million, two hundred sixty-two thousand, one hundred ninety".