37899225 has 96 divisors (see below), whose sum is σ = 85827840. Its totient is φ = 15966720.

The previous prime is 37899221. The next prime is 37899227. The reversal of 37899225 is 52299873.

It is not a de Polignac number, because 37899225 - 2² = 37899221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (37899221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 61117 + ... + 61733.

It is an arithmetic number, because the mean of its divisors is an integer number (894040).

Almost surely, 2^37899225 is an apocalyptic number.

37899225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

37899225 is an abundant number, since it is smaller than the sum of its proper divisors (47928615).

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

37899225 is a wasteful number, since it uses less digits than its factorization.

37899225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 645 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 37899225 is about 6156.2346446509. The cubic root of 37899225 is about 335.9000818969.

The spelling of 37899225 in words is "thirty-seven million, eight hundred ninety-nine thousand, two hundred twenty-five".