2520400415452 has 12 divisors (see below), whose sum is σ = 4419757610800. Its totient is φ = 1257612526656.

The previous prime is 2520400415447. The next prime is 2520400415453. The reversal of 2520400415452 is 2545140040252.

It is a super-2 number, since 2×2520400415452² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520400415453) 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, 646918077 + ... + 646921972.

Almost surely, 2^{2520400415452} is an apocalyptic number.

It is an amenable number.

2520400415452 is a deficient number, since it is larger than the sum of its proper divisors (1899357195348).

2520400415452 is a wasteful number, since it uses less digits than its factorization.

2520400415452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293840540 (or 1293840538 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 34.

The spelling of 2520400415452 in words is "two trillion, five hundred twenty billion, four hundred million, four hundred fifteen thousand, four hundred fifty-two".