1425555525 has 48 divisors (see below), whose sum is σ = 2464842240. Its totient is φ = 725630400.

The previous prime is 1425555517. The next prime is 1425555529. The reversal of 1425555525 is 5255555241.

It is not a de Polignac number, because 1425555525 - 2³ = 1425555517 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425555529) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1398466 + ... + 1399484.

It is an arithmetic number, because the mean of its divisors is an integer number (51350880).

Almost surely, 2^1425555525 is an apocalyptic number.

1425555525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1425555525 is a deficient number, since it is larger than the sum of its proper divisors (1039286715).

1425555525 is a wasteful number, since it uses less digits than its factorization.

1425555525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866 (or 1861 counting only the distinct ones).

The product of its digits is 250000, while the sum is 39.

The square root of 1425555525 is about 37756.5295677450. The cubic root of 1425555525 is about 1125.4547692260.

The spelling of 1425555525 in words is "one billion, four hundred twenty-five million, five hundred fifty-five thousand, five hundred twenty-five".