1625037225 has 216 divisors, whose sum is σ = 3580083360. Its totient is φ = 644474880.

The previous prime is 1625037221. The next prime is 1625037233. The reversal of 1625037225 is 5227305261.

1625037225 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1625037225 - 2² = 1625037221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1625037221) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 43919907 + ... + 43919943.

It is an arithmetic number, because the mean of its divisors is an integer number (16574460).

Almost surely, 2^1625037225 is an apocalyptic number.

1625037225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1625037225 is an abundant number, since it is smaller than the sum of its proper divisors (1955046135).

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

1625037225 is a wasteful number, since it uses less digits than its factorization.

1625037225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 1625037225 is about 40311.7504581481. The cubic root of 1625037225 is about 1175.6763210671.

The spelling of 1625037225 in words is "one billion, six hundred twenty-five million, thirty-seven thousand, two hundred twenty-five".