172525540 has 96 divisors (see below), whose sum is σ = 418618368. Its totient is φ = 59136000.

The previous prime is 172525531. The next prime is 172525583. The reversal of 172525540 is 45525271.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 279312 + ... + 279928.

It is an arithmetic number, because the mean of its divisors is an integer number (4360608).

Almost surely, 2^172525540 is an apocalyptic number.

172525540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172525540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209309184).

172525540 is an abundant number, since it is smaller than the sum of its proper divisors (246092828).

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

172525540 is a wasteful number, since it uses less digits than its factorization.

172525540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 172525540 is about 13134.8977917607. The cubic root of 172525540 is about 556.6956124565.

The spelling of 172525540 in words is "one hundred seventy-two million, five hundred twenty-five thousand, five hundred forty".