400025513321 has 8 divisors (see below), whose sum is σ = 462308780160. Its totient is φ = 339026437728.

The previous prime is 400025513311. The next prime is 400025513323. The reversal of 400025513321 is 123315520004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400025513321 - 2¹⁰ = 400025512297 is a prime.

It is a super-2 number, since 2×400025513321² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400025513323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321047141 + ... + 321048386.

It is an arithmetic number, because the mean of its divisors is an integer number (57788597520).

Almost surely, 2^400025513321 is an apocalyptic number.

It is an amenable number.

400025513321 is a deficient number, since it is larger than the sum of its proper divisors (62283266839).

400025513321 is an equidigital number, since it uses as much as digits as its factorization.

400025513321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642095623.

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 400025513321 in words is "four hundred billion, twenty-five million, five hundred thirteen thousand, three hundred twenty-one".