378138537525 has 48 divisors (see below), whose sum is σ = 715354214400. Its totient is φ = 172657095360.

The previous prime is 378138537503. The next prime is 378138537541. The reversal of 378138537525 is 525735831873.

It is not a de Polignac number, because 378138537525 - 2⁵ = 378138537493 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11236 + ... + 869714.

It is an arithmetic number, because the mean of its divisors is an integer number (14903212800).

Almost surely, 2^378138537525 is an apocalyptic number.

378138537525 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

378138537525 is a deficient number, since it is larger than the sum of its proper divisors (337215676875).

378138537525 is a wasteful number, since it uses less digits than its factorization.

378138537525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859338 (or 859333 counting only the distinct ones).

The product of its digits is 21168000, while the sum is 57.

The spelling of 378138537525 in words is "three hundred seventy-eight billion, one hundred thirty-eight million, five hundred thirty-seven thousand, five hundred twenty-five".