15455421440425 has 12 divisors (see below), whose sum is σ = 19279481409216. Its totient is φ = 12290299202000.

The previous prime is 15455421440411. The next prime is 15455421440429. The reversal of 15455421440425 is 52404412455451.

It is a happy number.

It is not a de Polignac number, because 15455421440425 - 2²³ = 15455413051817 is a prime.

It is a super-2 number, since 2×15455421440425² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15455421440429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1850944501 + ... + 1850952850.

It is an arithmetic number, because the mean of its divisors is an integer number (1606623450768).

Almost surely, 2^{15455421440425} is an apocalyptic number.

It is an amenable number.

15455421440425 is a deficient number, since it is larger than the sum of its proper divisors (3824059968791).

15455421440425 is a wasteful number, since it uses less digits than its factorization.

15455421440425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3701897528 (or 3701897523 counting only the distinct ones).

The product of its (nonzero) digits is 2560000, while the sum is 46.

Adding to 15455421440425 its reverse (52404412455451), we get a palindrome (67859833895876).

The spelling of 15455421440425 in words is "fifteen trillion, four hundred fifty-five billion, four hundred twenty-one million, four hundred forty thousand, four hundred twenty-five".