878558722525 has 36 divisors (see below), whose sum is σ = 1218144569472. Its totient is φ = 623367280000.

The previous prime is 878558722507. The next prime is 878558722553. The reversal of 878558722525 is 525227855878.

It is not a de Polignac number, because 878558722525 - 2⁷ = 878558722397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 487981 + ... + 1412530.

It is an arithmetic number, because the mean of its divisors is an integer number (33837349152).

Almost surely, 2^878558722525 is an apocalyptic number.

It is an amenable number.

878558722525 is a deficient number, since it is larger than the sum of its proper divisors (339585846947).

878558722525 is a wasteful number, since it uses less digits than its factorization.

878558722525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900614 (or 1900568 counting only the distinct ones).

The product of its digits is 125440000, while the sum is 64.

The spelling of 878558722525 in words is "eight hundred seventy-eight billion, five hundred fifty-eight million, seven hundred twenty-two thousand, five hundred twenty-five".