15225216461 has 16 divisors (see below), whose sum is σ = 18975936000. Its totient is φ = 11893834368.

The previous prime is 15225216451. The next prime is 15225216467. The reversal of 15225216461 is 16461252251.

It is a de Polignac number, because none of the positive numbers 2^k-15225216461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15225216467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1051736 + ... + 1066113.

It is an arithmetic number, because the mean of its divisors is an integer number (1185996000).

Almost surely, 2^15225216461 is an apocalyptic number.

It is an amenable number.

15225216461 is a deficient number, since it is larger than the sum of its proper divisors (3750719539).

15225216461 is a wasteful number, since it uses less digits than its factorization.

15225216461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117948.

The product of its digits is 28800, while the sum is 35.

The spelling of 15225216461 in words is "fifteen billion, two hundred twenty-five million, two hundred sixteen thousand, four hundred sixty-one".