625416906780 has 60 divisors (see below), whose sum is σ = 1961956005240. Its totient is φ = 166777841376.

The previous prime is 625416906731. The next prime is 625416906809. The reversal of 625416906780 is 87609614526.

625416906780 is a `hidden beast` number, since 6 + 2 + 5 + 416 + 90 + 67 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×625416906780² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 193028290 + ... + 193031529.

It is an arithmetic number, because the mean of its divisors is an integer number (32699266754).

Almost surely, 2^625416906780 is an apocalyptic number.

625416906780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

625416906780 is an abundant number, since it is smaller than the sum of its proper divisors (1336539098460).

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

625416906780 is a wasteful number, since it uses less digits than its factorization.

625416906780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386059840 (or 386059829 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 625416906780 in words is "six hundred twenty-five billion, four hundred sixteen million, nine hundred six thousand, seven hundred eighty".