126625644 has 36 divisors (see below), whose sum is σ = 321537216. Its totient is φ = 42016608.

The previous prime is 126625637. The next prime is 126625651. The reversal of 126625644 is 446526621.

126625644 is a `hidden beast` number, since 1 + 2 + 6 + 6 + 2 + 5 + 644 = 666.

It is an interprime number because it is at equal distance from previous prime (126625637) and next prime (126625651).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 126625599 and 126625608.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142 + ... + 15914.

Almost surely, 2^126625644 is an apocalyptic number.

It is an amenable number.

126625644 is an abundant number, since it is smaller than the sum of its proper divisors (194911572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126625644 is a wasteful number, since it uses less digits than its factorization.

126625644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16006 (or 16001 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 126625644 is about 11252.8060500481. The cubic root of 126625644 is about 502.1581963074.

The spelling of 126625644 in words is "one hundred twenty-six million, six hundred twenty-five thousand, six hundred forty-four".