155435351225 has 72 divisors (see below), whose sum is σ = 247538719008. Its totient is φ = 95726668800.

The previous prime is 155435351219. The next prime is 155435351231. The reversal of 155435351225 is 522153534551.

It is an interprime number because it is at equal distance from previous prime (155435351219) and next prime (155435351231).

It is not a de Polignac number, because 155435351225 - 2¹² = 155435347129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1048937 + ... + 1187913.

It is an arithmetic number, because the mean of its divisors is an integer number (3438037764).

Almost surely, 2^155435351225 is an apocalyptic number.

It is an amenable number.

155435351225 is a deficient number, since it is larger than the sum of its proper divisors (92103367783).

155435351225 is a wasteful number, since it uses less digits than its factorization.

155435351225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139095 (or 139083 counting only the distinct ones).

The product of its digits is 450000, while the sum is 41.

Adding to 155435351225 its reverse (522153534551), we get a palindrome (677588885776).

The spelling of 155435351225 in words is "one hundred fifty-five billion, four hundred thirty-five million, three hundred fifty-one thousand, two hundred twenty-five".