245123045525 has 24 divisors (see below), whose sum is σ = 305236937544. Its totient is φ = 195270912000.

The previous prime is 245123045521. The next prime is 245123045551. The reversal of 245123045525 is 525540321542.

It can be written as a sum of positive squares in 12 ways, for example, as 3272526436 + 241850519089 = 57206^2 + 491783^2 .

It is not a de Polignac number, because 245123045525 - 2² = 245123045521 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245123045521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9487625 + ... + 9513425.

It is an arithmetic number, because the mean of its divisors is an integer number (12718205731).

Almost surely, 2^245123045525 is an apocalyptic number.

245123045525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

245123045525 is a deficient number, since it is larger than the sum of its proper divisors (60113892019).

245123045525 is a wasteful number, since it uses less digits than its factorization.

245123045525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27401 (or 27396 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 38.

The spelling of 245123045525 in words is "two hundred forty-five billion, one hundred twenty-three million, forty-five thousand, five hundred twenty-five".