245012500 has 72 divisors (see below), whose sum is σ = 567948024. Its totient is φ = 92160000.

The previous prime is 245012477. The next prime is 245012513. The reversal of 245012500 is 5210542.

It can be written as a sum of positive squares in 12 ways, for example, as 217680516 + 27331984 = 14754^2 + 5228^2 .

It is a super-2 number, since 2×245012500² = 120062250312500000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 211924 + ... + 213076.

It is an arithmetic number, because the mean of its divisors is an integer number (7888167).

Almost surely, 2^245012500 is an apocalyptic number.

245012500 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 245012500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283974012).

245012500 is an abundant number, since it is smaller than the sum of its proper divisors (322935524).

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

245012500 is a wasteful number, since it uses less digits than its factorization.

245012500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199 (or 1177 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 245012500 is about 15652.8751352587. The cubic root of 245012500 is about 625.7431160954.

The spelling of 245012500 in words is "two hundred forty-five million, twelve thousand, five hundred".