2525656420 has 48 divisors (see below), whose sum is σ = 6107891328. Its totient is φ = 859322880.

The previous prime is 2525656417. The next prime is 2525656421. The reversal of 2525656420 is 246565252.

It is a super-3 number, since 3×2525656420³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2525656420.

It is not an unprimeable number, because it can be changed into a prime (2525656421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50517 + ... + 87196.

It is an arithmetic number, because the mean of its divisors is an integer number (127247736).

Almost surely, 2^2525656420 is an apocalyptic number.

2525656420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2525656420 is an abundant number, since it is smaller than the sum of its proper divisors (3582234908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2525656420 is a wasteful number, since it uses less digits than its factorization.

2525656420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137860 (or 137858 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

The square root of 2525656420 is about 50255.9093042798. The cubic root of 2525656420 is about 1361.8358317254.

The spelling of 2525656420 in words is "two billion, five hundred twenty-five million, six hundred fifty-six thousand, four hundred twenty".