155225340499 has 2 divisors, whose sum is σ = 155225340500. Its totient is φ = 155225340498.

The previous prime is 155225340451. The next prime is 155225340547. The reversal of 155225340499 is 994043522551.

It is a balanced prime because it is at equal distance from previous prime (155225340451) and next prime (155225340547).

It is a cyclic number.

It is not a de Polignac number, because 155225340499 - 2⁹ = 155225339987 is a prime.

It is not a weakly prime, because it can be changed into another prime (155225346499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77612670249 + 77612670250.

It is an arithmetic number, because the mean of its divisors is an integer number (77612670250).

Almost surely, 2^155225340499 is an apocalyptic number.

155225340499 is a deficient number, since it is larger than the sum of its proper divisors (1).

155225340499 is an equidigital number, since it uses as much as digits as its factorization.

155225340499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944000, while the sum is 49.

The spelling of 155225340499 in words is "one hundred fifty-five billion, two hundred twenty-five million, three hundred forty thousand, four hundred ninety-nine".