2125574731 has 4 divisors (see below), whose sum is σ = 2429228272. Its totient is φ = 1821921192.

The previous prime is 2125574729. The next prime is 2125574741. The reversal of 2125574731 is 1374755212.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2125574731 - 2¹ = 2125574729 is a prime.

It is a super-2 number, since 2×2125574731² = 9036135874131444722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2125574741) 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, 151826760 + ... + 151826773.

It is an arithmetic number, because the mean of its divisors is an integer number (607307068).

Almost surely, 2^2125574731 is an apocalyptic number.

2125574731 is a deficient number, since it is larger than the sum of its proper divisors (303653541).

2125574731 is an equidigital number, since it uses as much as digits as its factorization.

2125574731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303653540.

The product of its digits is 58800, while the sum is 37.

The square root of 2125574731 is about 46103.9556979659. The cubic root of 2125574731 is about 1285.7566903904.

The spelling of 2125574731 in words is "two billion, one hundred twenty-five million, five hundred seventy-four thousand, seven hundred thirty-one".