1625201772672 has 32 divisors (see below), whose sum is σ = 4316942209680. Its totient is φ = 541733924096.

The previous prime is 1625201772611. The next prime is 1625201772703. The reversal of 1625201772672 is 2762771025261.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1625201772672² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2116147758 + ... + 2116148525.

Almost surely, 2^{1625201772672} is an apocalyptic number.

1625201772672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1625201772672 is an abundant number, since it is smaller than the sum of its proper divisors (2691740437008).

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

1625201772672 is an equidigital number, since it uses as much as digits as its factorization.

1625201772672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4232296300 (or 4232296288 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 48.

The spelling of 1625201772672 in words is "one trillion, six hundred twenty-five billion, two hundred one million, seven hundred seventy-two thousand, six hundred seventy-two".