625970539489 has 9 divisors (see below), whose sum is σ = 628046329107. Its totient is φ = 623901595944.

The previous prime is 625970539483. The next prime is 625970539547. The reversal of 625970539489 is 984935079526.

The square root of 625970539489 is 791183.

It is a perfect power (a square), and thus also a powerful number.

625970539489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 459457575889 + 166512963600 = 677833^2 + 408060^2 .

It is not a de Polignac number, because 625970539489 - 2¹¹ = 625970537441 is a prime.

It is a super-2 number, since 2×625970539489² (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 (625970539483) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 276121734 + ... + 276124000.

Almost surely, 2^625970539489 is an apocalyptic number.

625970539489 is the 791183-rd square number.

625970539489 is the 395592-nd centered octagonal number.

It is an amenable number.

625970539489 is a deficient number, since it is larger than the sum of its proper divisors (2075789618).

625970539489 is an frugal number, since it uses more digits than its factorization.

625970539489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5232 (or 2616 counting only the distinct ones).

The product of its (nonzero) digits is 146966400, while the sum is 67.

The spelling of 625970539489 in words is "six hundred twenty-five billion, nine hundred seventy million, five hundred thirty-nine thousand, four hundred eighty-nine".