78150625 has 20 divisors (see below), whose sum is σ = 111614272. Its totient is φ = 53586000.

The previous prime is 78150617. The next prime is 78150647. The reversal of 78150625 is 52605187.

It is not a de Polignac number, because 78150625 - 2³ = 78150617 is a prime.

It is a super-2 number, since 2×78150625² = 12215040375781250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4557 + ... + 13306.

Almost surely, 2^78150625 is an apocalyptic number.

It is an amenable number.

78150625 is a deficient number, since it is larger than the sum of its proper divisors (33463647).

78150625 is an equidigital number, since it uses as much as digits as its factorization.

78150625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17890 (or 17875 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 78150625 is about 8840.2842148881. The cubic root of 78150625 is about 427.5407209025.

The spelling of 78150625 in words is "seventy-eight million, one hundred fifty thousand, six hundred twenty-five".