37725989 has 4 divisors (see below), whose sum is σ = 43115424. Its totient is φ = 32336556.

The previous prime is 37725979. The next prime is 37726021. The reversal of 37725989 is 98952773.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 37725989 - 2⁴ = 37725973 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37725929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2694707 + ... + 2694720.

It is an arithmetic number, because the mean of its divisors is an integer number (10778856).

Almost surely, 2^37725989 is an apocalyptic number.

It is an amenable number.

37725989 is a deficient number, since it is larger than the sum of its proper divisors (5389435).

37725989 is an equidigital number, since it uses as much as digits as its factorization.

37725989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5389434.

The product of its digits is 952560, while the sum is 50.

The square root of 37725989 is about 6142.1485654452. The cubic root of 37725989 is about 335.3875043629.

The spelling of 37725989 in words is "thirty-seven million, seven hundred twenty-five thousand, nine hundred eighty-nine".