172237125530 has 16 divisors (see below), whose sum is σ = 326344027680. Its totient is φ = 65268805392.

The previous prime is 172237125461. The next prime is 172237125563. The reversal of 172237125530 is 35521732271.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453255404 + ... + 453255783.

It is an arithmetic number, because the mean of its divisors is an integer number (20396501730).

Almost surely, 2^172237125530 is an apocalyptic number.

172237125530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172237125530 is a deficient number, since it is larger than the sum of its proper divisors (154106902150).

172237125530 is a wasteful number, since it uses less digits than its factorization.

172237125530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906511213.

The product of its (nonzero) digits is 88200, while the sum is 38.

The spelling of 172237125530 in words is "one hundred seventy-two billion, two hundred thirty-seven million, one hundred twenty-five thousand, five hundred thirty".