25345878590 has 48 divisors (see below), whose sum is σ = 48600890352. Its totient is φ = 9514844928.

The previous prime is 25345878587. The next prime is 25345878619. The reversal of 25345878590 is 9587854352.

It is a happy number.

It is a super-2 number, since 2×25345878590² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 353462 + ... + 419078.

It is an arithmetic number, because the mean of its divisors is an integer number (1012518549).

Almost surely, 2^25345878590 is an apocalyptic number.

25345878590 is a deficient number, since it is larger than the sum of its proper divisors (23255011762).

25345878590 is a wasteful number, since it uses less digits than its factorization.

25345878590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65769 (or 65750 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 56.

The spelling of 25345878590 in words is "twenty-five billion, three hundred forty-five million, eight hundred seventy-eight thousand, five hundred ninety".