240438219025 has 27 divisors (see below), whose sum is σ = 300067962483. Its totient is φ = 191116867200.

The previous prime is 240438218983. The next prime is 240438219029. The reversal of 240438219025 is 520912834042.

The square root of 240438219025 is 490345.

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 56108818129 + 184329400896 = 236873^2 + 429336^2 .

It is not a de Polignac number, because 240438219025 - 2³³ = 231848284433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240438219029) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 688934551 + ... + 688934899.

Almost surely, 2^240438219025 is an apocalyptic number.

240438219025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

240438219025 is the 490345-th square number.

240438219025 is the 245173-rd centered octagonal number.

It is an amenable number.

240438219025 is a deficient number, since it is larger than the sum of its proper divisors (59629743458).

240438219025 is an frugal number, since it uses more digits than its factorization.

240438219025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 240438219025 in words is "two hundred forty billion, four hundred thirty-eight million, two hundred nineteen thousand, twenty-five".