25456955830 has 16 divisors (see below), whose sum is σ = 48517963200. Its totient is φ = 9583795072.

The previous prime is 25456955807. The next prime is 25456955837. The reversal of 25456955830 is 3855965452.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25456955837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74873230 + ... + 74873569.

It is an arithmetic number, because the mean of its divisors is an integer number (3032372700).

Almost surely, 2^25456955830 is an apocalyptic number.

25456955830 is a deficient number, since it is larger than the sum of its proper divisors (23061007370).

25456955830 is a wasteful number, since it uses less digits than its factorization.

25456955830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149746823.

The product of its (nonzero) digits is 6480000, while the sum is 52.

The spelling of 25456955830 in words is "twenty-five billion, four hundred fifty-six million, nine hundred fifty-five thousand, eight hundred thirty".