225251252040 has 32 divisors (see below), whose sum is σ = 675753756480. Its totient is φ = 60067000512.

The previous prime is 225251252021. The next prime is 225251252059. The reversal of 225251252040 is 40252152522.

It is an interprime number because it is at equal distance from previous prime (225251252021) and next prime (225251252059).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 225251251989 and 225251252007.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 938546764 + ... + 938547003.

It is an arithmetic number, because the mean of its divisors is an integer number (21117304890).

Almost surely, 2^225251252040 is an apocalyptic number.

225251252040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225251252040 is an abundant number, since it is smaller than the sum of its proper divisors (450502504440).

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

225251252040 is a wasteful number, since it uses less digits than its factorization.

225251252040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877093781 (or 1877093777 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The spelling of 225251252040 in words is "two hundred twenty-five billion, two hundred fifty-one million, two hundred fifty-two thousand, forty".