155225340454 has 4 divisors (see below), whose sum is σ = 232838010684. Its totient is φ = 77612670226.

The previous prime is 155225340451. The next prime is 155225340499. The reversal of 155225340454 is 454043522551.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×155225340454² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155225340451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38806335112 + ... + 38806335115.

It is an arithmetic number, because the mean of its divisors is an integer number (58209502671).

Almost surely, 2^155225340454 is an apocalyptic number.

155225340454 is a deficient number, since it is larger than the sum of its proper divisors (77612670230).

155225340454 is an equidigital number, since it uses as much as digits as its factorization.

155225340454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77612670229.

The product of its (nonzero) digits is 480000, while the sum is 40.

The spelling of 155225340454 in words is "one hundred fifty-five billion, two hundred twenty-five million, three hundred forty thousand, four hundred fifty-four".