155256437450 has 24 divisors (see below), whose sum is σ = 291636161100. Its totient is φ = 61487696000.

The previous prime is 155256437407. The next prime is 155256437461. The reversal of 155256437450 is 54734652551.

It can be written as a sum of positive squares in 6 ways, for example, as 51297267121 + 103959170329 = 226489^2 + 322427^2 .

It is a super-2 number, since 2×155256437450² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 155256437395 and 155256437404.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15366875 + ... + 15376974.

Almost surely, 2^155256437450 is an apocalyptic number.

155256437450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155256437450 is a deficient number, since it is larger than the sum of its proper divisors (136379723650).

155256437450 is a wasteful number, since it uses less digits than its factorization.

155256437450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30743962 (or 30743957 counting only the distinct ones).

The product of its (nonzero) digits is 2520000, while the sum is 47.

The spelling of 155256437450 in words is "one hundred fifty-five billion, two hundred fifty-six million, four hundred thirty-seven thousand, four hundred fifty".