155025143040 has 144 divisors (see below), whose sum is σ = 495808992000. Its totient is φ = 41281806336.

The previous prime is 155025143029. The next prime is 155025143069. The reversal of 155025143040 is 40341520551.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 155025142989 and 155025143007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2732886 + ... + 2789034.

It is an arithmetic number, because the mean of its divisors is an integer number (3443118000).

Almost surely, 2^155025143040 is an apocalyptic number.

155025143040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155025143040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247904496000).

155025143040 is an abundant number, since it is smaller than the sum of its proper divisors (340783848960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155025143040 is an equidigital number, since it uses as much as digits as its factorization.

155025143040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56892 (or 56878 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 155025143040 its reverse (40341520551), we get a palindrome (195366663591).

The spelling of 155025143040 in words is "one hundred fifty-five billion, twenty-five million, one hundred forty-three thousand, forty".