2153400421225 has 24 divisors (see below), whose sum is σ = 2810890369280. Its totient is φ = 1631971800000.

The previous prime is 2153400421199. The next prime is 2153400421241. The reversal of 2153400421225 is 5221240043512.

It is a happy number.

It is not a de Polignac number, because 2153400421225 - 2⁹ = 2153400420713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10860475 + ... + 11056975.

Almost surely, 2^{2153400421225} is an apocalyptic number.

2153400421225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2153400421225 is a deficient number, since it is larger than the sum of its proper divisors (657489948055).

2153400421225 is a wasteful number, since it uses less digits than its factorization.

2153400421225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219601 (or 219596 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 2153400421225 its reverse (5221240043512), we get a palindrome (7374640464737).

The spelling of 2153400421225 in words is "two trillion, one hundred fifty-three billion, four hundred million, four hundred twenty-one thousand, two hundred twenty-five".