2123562990025 has 27 divisors (see below), whose sum is σ = 2706653240319. Its totient is φ = 1652725673280.

The previous prime is 2123562990011. The next prime is 2123562990083. The reversal of 2123562990025 is 5200992653212.

The square root of 2123562990025 is 1457245.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 1212370559929 + 911192430096 = 1101077^2 + 954564^2 .

It is not a de Polignac number, because 2123562990025 - 2²³ = 2123554601417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 269586387 + ... + 269594263.

Almost surely, 2^{2123562990025} is an apocalyptic number.

2123562990025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2123562990025 is the 1457245-th square number.

2123562990025 is the 728623-rd centered octagonal number.

It is an amenable number.

2123562990025 is a deficient number, since it is larger than the sum of its proper divisors (583090250294).

2123562990025 is an frugal number, since it uses more digits than its factorization.

2123562990025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15838 (or 7919 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 2123562990025 in words is "two trillion, one hundred twenty-three billion, five hundred sixty-two million, nine hundred ninety thousand, twenty-five".