38109725 has 12 divisors (see below), whose sum is σ = 49743840. Its totient is φ = 28882800.

The previous prime is 38109707. The next prime is 38109727. The reversal of 38109725 is 52790183.

It is not a de Polignac number, because 38109725 - 2⁶ = 38109661 is a prime.

It is a super-2 number, since 2×38109725² = 2904702279151250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38109727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39641 + ... + 40590.

It is an arithmetic number, because the mean of its divisors is an integer number (4145320).

Almost surely, 2^38109725 is an apocalyptic number.

It is an amenable number.

38109725 is a deficient number, since it is larger than the sum of its proper divisors (11634115).

38109725 is a wasteful number, since it uses less digits than its factorization.

38109725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80260 (or 80255 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 38109725 is about 6173.3074603489. The cubic root of 38109725 is about 336.5208198560.

The spelling of 38109725 in words is "thirty-eight million, one hundred nine thousand, seven hundred twenty-five".