25420645510 has 32 divisors (see below), whose sum is σ = 49435468992. Its totient is φ = 9355889280.

The previous prime is 25420645493. The next prime is 25420645543. The reversal of 25420645510 is 1554602452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273949 + ... + 354808.

It is an arithmetic number, because the mean of its divisors is an integer number (1544858406).

Almost surely, 2^25420645510 is an apocalyptic number.

25420645510 is a deficient number, since it is larger than the sum of its proper divisors (24014823482).

25420645510 is a wasteful number, since it uses less digits than its factorization.

25420645510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629088.

The product of its (nonzero) digits is 48000, while the sum is 34.

The spelling of 25420645510 in words is "twenty-five billion, four hundred twenty million, six hundred forty-five thousand, five hundred ten".