13215401001025 has 48 divisors (see below), whose sum is σ = 17106978297600. Its totient is φ = 10120994357760.

The previous prime is 13215401000951. The next prime is 13215401001029. The reversal of 13215401001025 is 52010010451231.

It is not a de Polignac number, because 13215401001025 - 2⁷ = 13215401000897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (13215401001029) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7729527 + ... + 9283123.

It is an arithmetic number, because the mean of its divisors is an integer number (356395381200).

Almost surely, 2^{13215401001025} is an apocalyptic number.

It is an amenable number.

13215401001025 is a deficient number, since it is larger than the sum of its proper divisors (3891577296575).

13215401001025 is a wasteful number, since it uses less digits than its factorization.

13215401001025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553818 (or 1553813 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 13215401001025 its reverse (52010010451231), we get a palindrome (65225411452256).

The spelling of 13215401001025 in words is "thirteen trillion, two hundred fifteen billion, four hundred one million, one thousand, twenty-five".