2015863142925 has 24 divisors (see below), whose sum is σ = 3333003174144. Its totient is φ = 1075091704960.

The previous prime is 2015863142903. The next prime is 2015863142989. The reversal of 2015863142925 is 5292413685102.

It is not a de Polignac number, because 2015863142925 - 2⁵ = 2015863142893 is a prime.

It is a super-2 number, since 2×2015863142925² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1943209 + ... + 2794241.

It is an arithmetic number, because the mean of its divisors is an integer number (138875132256).

Almost surely, 2^{2015863142925} is an apocalyptic number.

2015863142925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2015863142925 is a deficient number, since it is larger than the sum of its proper divisors (1317140031219).

2015863142925 is a wasteful number, since it uses less digits than its factorization.

2015863142925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882629 (or 882624 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 2015863142925 in words is "two trillion, fifteen billion, eight hundred sixty-three million, one hundred forty-two thousand, nine hundred twenty-five".