245125400520 has 512 divisors, whose sum is σ = 989565050880. Its totient is φ = 46912020480.

The previous prime is 245125400503. The next prime is 245125400537. The reversal of 245125400520 is 25004521542.

It is an interprime number because it is at equal distance from previous prime (245125400503) and next prime (245125400537).

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

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 60418332 + ... + 60422388.

It is an arithmetic number, because the mean of its divisors is an integer number (1932744240).

Almost surely, 2^245125400520 is an apocalyptic number.

245125400520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245125400520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494782525440).

245125400520 is an abundant number, since it is smaller than the sum of its proper divisors (744439650360).

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

245125400520 is a wasteful number, since it uses less digits than its factorization.

245125400520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4605 (or 4601 counting only the distinct ones).

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

The spelling of 245125400520 in words is "two hundred forty-five billion, one hundred twenty-five million, four hundred thousand, five hundred twenty".