78022455625 has 15 divisors (see below), whose sum is σ = 97505587443. Its totient is φ = 62412378000.

The previous prime is 78022455619. The next prime is 78022455647. The reversal of 78022455625 is 52655422087.

The square root of 78022455625 is 279325.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 62034370489 + 15988085136 = 249067^2 + 126444^2 .

It is not a de Polignac number, because 78022455625 - 2⁹ = 78022455113 is a prime.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 6977539 + ... + 6988711.

Almost surely, 2^78022455625 is an apocalyptic number.

78022455625 is the 279325-th square number.

78022455625 is the 139663-rd centered octagonal number.

It is an amenable number.

78022455625 is a deficient number, since it is larger than the sum of its proper divisors (19483131818).

78022455625 is an frugal number, since it uses more digits than its factorization.

78022455625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22366 (or 11178 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 46.

The spelling of 78022455625 in words is "seventy-eight billion, twenty-two million, four hundred fifty-five thousand, six hundred twenty-five".