2145425525 has 12 divisors (see below), whose sum is σ = 2746145664. Its totient is φ = 1660974000.

The previous prime is 2145425507. The next prime is 2145425549. The reversal of 2145425525 is 5255245412.

It is not a de Polignac number, because 2145425525 - 2⁶ = 2145425461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1383371 + ... + 1384920.

It is an arithmetic number, because the mean of its divisors is an integer number (228845472).

Almost surely, 2^2145425525 is an apocalyptic number.

2145425525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2145425525 is a deficient number, since it is larger than the sum of its proper divisors (600720139).

2145425525 is a wasteful number, since it uses less digits than its factorization.

2145425525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2768332 (or 2768327 counting only the distinct ones).

The product of its digits is 80000, while the sum is 35.

The square root of 2145425525 is about 46318.7383787598. The cubic root of 2145425525 is about 1289.7468655806.

The spelling of 2145425525 in words is "two billion, one hundred forty-five million, four hundred twenty-five thousand, five hundred twenty-five".