39725003689381 has 4 divisors (see below), whose sum is σ = 39725028011200. Its totient is φ = 39724979367564.

The previous prime is 39725003689313. The next prime is 39725003689421. The reversal of 39725003689381 is 18398630052793.

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 a cyclic number.

It is not a de Polignac number, because 39725003689381 - 2¹⁷ = 39725003558309 is a prime.

It is a super-2 number, since 2×39725003689381² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39725003683381) 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, 9519741 + ... + 13041298.

It is an arithmetic number, because the mean of its divisors is an integer number (9931257002800).

Almost surely, 2^{39725003689381} is an apocalyptic number.

It is an amenable number.

39725003689381 is a deficient number, since it is larger than the sum of its proper divisors (24321819).

39725003689381 is a wasteful number, since it uses less digits than its factorization.

39725003689381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24321818.

The product of its (nonzero) digits is 58786560, while the sum is 64.

The spelling of 39725003689381 in words is "thirty-nine trillion, seven hundred twenty-five billion, three million, six hundred eighty-nine thousand, three hundred eighty-one".