615225440272 has 10 divisors (see below), whose sum is σ = 1191999290558. Its totient is φ = 307612720128.

The previous prime is 615225440267. The next prime is 615225440287. The reversal of 615225440272 is 272044522516.

It can be written as a sum of positive squares in only one way, i.e., 467412872976 + 147812567296 = 683676^2 + 384464^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19225794993 + ... + 19225795024.

Almost surely, 2^615225440272 is an apocalyptic number.

It is an amenable number.

615225440272 is a deficient number, since it is larger than the sum of its proper divisors (576773850286).

615225440272 is a wasteful number, since it uses less digits than its factorization.

615225440272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38451590025 (or 38451590019 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 40.

Adding to 615225440272 its reverse (272044522516), we get a palindrome (887269962788).

The spelling of 615225440272 in words is "six hundred fifteen billion, two hundred twenty-five million, four hundred forty thousand, two hundred seventy-two".